http://www.ufoandparanormalnews.com/Government-Stories/apophis-deadly-asteroid-headed-toward-earth/ It's big. Rose Bowl-sized big. It's bad. 510 megatons of TNT bad. What would that type of firepower equate to? Well, the largest atomic weapon ever detonated was the Tsar Bomba, a Soviet hydrogen bomb yielding roughly 50 megatons of destructive force. Simultaneously discharge ten of those babies, and you'd have a pretty good idea.read more Read More/> Sun, 08 May 2011 08:24:16 UTC en